android.text.method
public abstract class
public abstract class
android.text.method.MetaKeyInputMethod
| java.lang.Object | ||
| android.text.method.MetaKeyInputMethod | ||
This base class encapsulates the behavior for handling the meta keys (caps, fn, sym). Input methods that care about meta state should inherit from it; you should not instantiate this class directly in a client.
Known Direct Subclasses
Known Indirect Subclasses
Summary
Constants
| Value | ||||
|---|---|---|---|---|
| int | META_ALT_LOCKED | 512 | 0x00000200 | |
| int | META_ALT_ON | 2 | 0x00000002 | |
| int | META_CAP_LOCKED | 256 | 0x00000100 | |
| int | META_CAP_ON | 1 | 0x00000001 | |
| int | META_SYM_LOCKED | 1024 | 0x00000400 | |
| int | META_SYM_ON | 4 | 0x00000004 |
Public Constructors
| MetaKeyInputMethod() |
Public Methods
| static | void | adjustMetaAfterKeypress(Spannable content) | |||
| Call this method after you handle a keypress so that the meta state will be reset to unshifted (if it is not still down) or primed to be reset to unshifted (once it is released). | |||||
| final | static | int | getMetaState(CharSequence text, int meta) | ||
| Gets the state of a particular meta key. | |||||
| final | static | int | getMetaState(CharSequence text) | ||
| Gets the state of the meta keys. | |||||
| static | boolean | isMetaTracker(CharSequence text, Object what) | |||
| Returns true if this object is one that this class would use to keep track of meta state in the specified text. | |||||
| boolean | onKeyDown(View view, Editable content, int keyCode, KeyEvent event) | ||||
| Handles presses of the meta keys. | |||||
| boolean | onKeyUp(View view, Editable content, int keyCode, KeyEvent event) | ||||
| Handles release of the meta keys. | |||||
| static | void | resetMetaState(Spannable text) | |||
| Resets all meta state to inactive. | |||||
Protected Methods
| static | void | resetLockedMeta(Spannable content) | |||
| Call this if you are a method that ignores the locked meta state (arrow keys, for example) and you handle a key. | |||||
Methods inherited
from class
java.lang.Object
Details
Constants
public static final int META_ALT_LOCKED
Constant Value:
512
(0x00000200)
public static final int META_ALT_ON
Constant Value:
2
(0x00000002)
public static final int META_CAP_LOCKED
Constant Value:
256
(0x00000100)
public static final int META_CAP_ON
Constant Value:
1
(0x00000001)
public static final int META_SYM_LOCKED
Constant Value:
1024
(0x00000400)
public static final int META_SYM_ON
Constant Value:
4
(0x00000004)
Public Constructors
public MetaKeyInputMethod()
Public Methods
public static void adjustMetaAfterKeypress(Spannable content)
Call this method after you handle a keypress so that the meta
state will be reset to unshifted (if it is not still down)
or primed to be reset to unshifted (once it is released).
public static final int getMetaState(CharSequence text, int meta)
Gets the state of a particular meta key.
Parameters
| text | the buffer in which the meta key would have been pressed. |
|---|---|
| meta | META_CAP_ON, META_ALT_ON, or META_SYM_ON |
Returns
- 0 if inactive, 1 if active, 2 if locked.
public static final int getMetaState(CharSequence text)
Gets the state of the meta keys.
Parameters
| text | the buffer in which the meta key would have been pressed. |
|---|
Returns
- an integer in which each bit set to one represents a pressed or locked meta key.
public static boolean isMetaTracker(CharSequence text, Object what)
Returns true if this object is one that this class would use to
keep track of meta state in the specified text.
public boolean onKeyDown(View view, Editable content, int keyCode, KeyEvent event)
Handles presses of the meta keys.
public boolean onKeyUp(View view, Editable content, int keyCode, KeyEvent event)
Handles release of the meta keys.
public static void resetMetaState(Spannable text)
Resets all meta state to inactive.
Protected Methods
protected static void resetLockedMeta(Spannable content)
Call this if you are a method that ignores the locked meta state
(arrow keys, for example) and you handle a key.